Automatic fire-extinguisher



(NO Model.)

T. JOHNSON.

AUTOMATIC HRB EXTINGUISHBR.

@wu-mma @QW UNITED STATES PATENT OFFICEO THEODORE JOHNSON, OFALEXANDRIA, MINNESOTA.

AUTOMATIC FIRE-E'XTINGUISHER.

SPECIFICATION forming part ef Letters Patent No. 370,874, dated october4, 1887.

Application filed April S, 1387. Serial No. 234,207. (No model.)

To all whom it may concern.-

Be it known that I, THEODORE JOHNSON, a citizen of the United States,residing at Alexandria, in the county of Douglas and State ofMinnesota,have invented certain new and useful Improvements in AutomaticFire-Extinguishers; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawing, and to the letters andiigures ofreference marked thereon, which form a part of thisspecification.

This invention relates to automatic iire extinguishers and alarms,whereby, in the event of re in .a locality in'which the device isplaced, a bottle or package containing an alkaline solution will beexploded, and the gas liberated from the previously-confined solutionwill blanket the lire and extinguish the same. The explosive medium is acharge of gunpowder or similar substance placed between the bottom ofthe package and the bottom of the case, and a fuse connected therewith-protrudes from the case, so as to become ignited in the event of lireor abnormal increase of temperature. The case is loosely mounted, so asto move bodily when the explosion takes place, and aconnectionint-erposed between it and an alarm located at a distant pointis moved and sounds said alarm to give timely warning that something isamiss. The explosion likewise serves as an alarm to warn persons in theimmediate vit cinity of the place of lire that something is 5o embodyingmy invention.

The case or shell A, closed at its left-hand end by cap B and open atthe other end, receives the package or bottle of alkaline solution C,which is supported upon or rests against the short tube or shell D,containingV the charge of explosive material. The cap is screwed uponthe left-hand end of the shell or case and is centrally apertured, andthrough the aperture b extends the fuse E, which is of desired lengthand protrudes beyond the cap. The case is designed to be supported insuch manner that at the time of the explosion it 'can move bodily. Itmay be suspended from the ends of the cords or chains or rods Fdepending from the ceiling or other support. The rods F have their lowerends loosely fitted in the eyes g, projected from the side of the case.

The alarm H, located at any desired point distant from the device, isconnected therewith by the wire h, so that the movement of the devicewill sound the alarm and give warning that all is not right.

In practice the device is located in places liable to lire-such asengine-rooms and places where a tire is kept constantly and is not atall times under direct surveillance. In the event of ire or abnormalincrease of temperature the fuse will become ignited and explode thecharge in the tube D, which will burst the package and scatter thesolution in every direction and extinguish the re, at the same time theviolence of the explosion causes the 1 ease to move, and this movement,through the Wire h, sounds the alarm at the distant point, as previouslyintimated.

' Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. 'The herein shown and described fire-extinguisher, composed of theshell open at one end and. closed at its opposite end by an aperturedcap, the short tube containing an explosive charge located opposite saidaperture and resting against the cap, the fuse passing through theaperture in the cap and communicating with the charge, and the packageof alkaline solution placed loosely in the open end of the shell andresting against the short tube containing the explosive, substantiallyas and for the purpose set forth.

2. A combined dre-extinguisher and alarmsounder, composed of the shellmounted so as alarm on an abnormal increase of temperature,

to have a free bodily movement, the alai'ni, substantially as specified.:J suitable connection interposed between and In testimony whereof Iafix my signature in positively connecting the alarm With the shell,presence of two Witnesses.

5 the fire-extinguishing compound placed Within THEODORE JOHNSON.

the shell, and the explosive for ejecting the XVitnesses:fire-extinguishing compound and effecting a JAMES MOTT, bodily movementof the shell for sounding the BUEL CHIDESTER.

